#include<stdio.h>
	int main(void)
	{  
	  int a,b;//Enter a and b:
      scanf("%d%d",&a,&b); 
      printf("a=%d b=%d\n",a,b);
      a=a^b;
      b=b^a;
      a=a^b;

	  printf("a=%d  b=%d\n",a,b);  
       return 0;
	}
